Problem
Use identities to fill in the blank with the appropriate trigonometric function name. \[ \cos 35^{\circ}=\frac{1}{55^{\circ}} \] \[ \cos 35^{\circ}=\frac{1}{\square 55^{\circ}} \]
Solution
Step 1 ：Use identities to fill in the blank with the appropriate trigonometric function name. \[\cos 35^{\circ}=\frac{1}{55^{\circ}}\] \[\cos 35^{\circ}=\frac{1}{\square 55^{\circ}}\]
Step 2 ：Final Answer: The appropriate trigonometric function to fill in the blank is \(\boxed{\sec}\)
